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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
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    <title>Document</title>
    <style>
        body {
            /* 设置字体大小 */
            font-size: 24px;
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        span {
            color: red;
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        ul {
            list-style: none;
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</head>

<body>
    <p>我一定要<span>好好学习</span></p>
    <div>
        <ul>
            <li>A</li>
            <li>B</li>
            <li><span>C</span></li>
        </ul>
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